Spring-hinge



(No Model.)

. N. LINSLEY. SPRING HINGE. No. 393,376. P8tented Nov.27, 1888..

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7 UNITED STATES PATENT Grricn.

NEWTON LINSLEY, OF FREEPORI, ILLINOIS.

SPRING-HINGE.

' SPECIFICATION forming part of Letters Patent Nof393,376, dated November 27, 1888.

Application filed July 14,1886. Serial N0.208,9-12.

T0 00% whom it may concern.-

Be it known that I, NEWTON LINSLEY, a residentof Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Spring- Hinges; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention is an improvement in springhinges, and relates especially to the frame or grip in which the spring is placed in certain double-acting spring-hinges, or hinges which hold the door either shut or open, according to the position in which the door is left by external moving force.

It has hitherto been necessary in making the frame which carries the spring to drill its parts for the passage of a central rod or to resort to equally expensive means for uniting the parts. My invention provides a frame of which the parts may be cast with the greatest facility without cores, and which may be put together and have the spring placed therein withoutpreliminary drilling or other preparatory steps.

In the drawings, Figure 1 is a plan of the hinge with all parts ,in the position they occupy when upon the closed door. Fig. 2 is a section on the line my of Fig. 1. Fig. 3 shows the same parts of the frame as Fig. 2, but in their position when the door has been opened nearly one hundred and eighty degrees. Fig. 4 is a perspective view of the frame; Figs. 5 and 6, views of the combined spring core and washer which is inserted at each end of the spring.

The body of the hinge presents no novelty, as it consists of two similar leaves, A and B, bearing, respectively, the ears H H and H H, and also integrally-formed loops K K, serving for the attachment of the spring-frame. The outer car at each end of the hinge bears a short central gudgeon, J, which engages the inner ear, to the center of which it is passed by means of the slot J. Between the inner ears, but attached directly to neither of them, lies the spring-frame E E E E L L. The frame consists of two similar parts, and each part consists of two approximately circular ears, E

(No model.)

E E E, one at each end of the spring, connected by a rigid bar, L L. Each of these cars E E bears a hook, M, for engaging one of the loops K upon the leaves. "When all the parts of the hinge are in position, the ears of the frame and of the leaves should normally form portions of the same cylinder, and their centers should all be in the axis of the hinge or the line of its pintle. To unite the parts of the frame and serve as an axis upon which they may rotate with reference to each other, an axis or pintle, I, must pass from end to end of the frame, or gudgeons equivalent thereto as to this oflice must be employed. To provide for this necessity it has been customary to drill or core either two or four of these ears. If, however, upon opposite sides in the two parts of the frame sector-like portions of the ears be removed in such manner that the faces of the slots so formed may be tangent to the pintle I in its proposed position, and if the bottom of the slot be rounded to fit the pintle, the frame may be put together and the pintle Ibe then inserted. Now,when the slots F have been formed at the. proper points, not quite diametrically opposite, the rounded bottoms of the slots will form a com plete bearing for the pintle so long as the parts of the hinge are in their normal positions, as shown in Figs. 1 and 2. When the door is opened to its limit, or one hundred and eighty degrees, the ears and pintle take the position shown in Fig. 3, and even yet the rounded portions of the slots form nearly a complete circle, and also form a bearing for almost the entire circumference of the pintle. Evidently, then, so long as the ears occupy either these or intermediate positions, the pintle unites the two parts practically the same as if the ears were cast solid and centrally drilled. Nor is the case changed if the spring with the washers supporting respectively its end coils be placed in position with its hooked ends engaging the bars L L, respectively, for the force which it exerts tends in all the positions possible for the door to force the rounded bottom of each slot against the pintle.

In each part of the frame the slots in the two ears are in the same plane, and this plane is so nearly parallel to the general direction of the hooks K that the slight inclination of the faces of both the slots and the hooks is sufficient to permit drawing from the sand in an ordinary two-part flask; hence the entire expense of drilling or coring is saved. At the same time the parts of the hinge can be put together more readily and rapidly, while the effectiveness and durability of the hinge seem in no way impaired. Seen from the end of the hinge, as in Figs. 2 and 3, the slots normally make with each other an angle somewhat greater than the angular displacement allowed by the construction of thehinge to the plates themselves; hence the slots can never coincide and the pintle can never be laterally displaced while the other parts are in position.

What I claim as new, and desire to secure by Letters Patent, is-

1. In spring-hinges of the class described, the combination, with the spring-pintle, of a pair of contiguous plates mounted upon each end thereof, each provided with a hook for a two-part spring-supporting frame, each of 30 whose parts consists of two slotted plates conneeted by an integrally-formed bar, and is provided with a hook or hooks for engagement with the leaves of the hinge, snbstantiall y as and for the purpose set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

NEWTON LINSLEY. Witnesses:

O. W. GRAHAM, J. A. GRAIN. 

